EP0095638A1 - 2,6-Dicyanoanilines - Google Patents
2,6-Dicyanoanilines Download PDFInfo
- Publication number
- EP0095638A1 EP0095638A1 EP83104789A EP83104789A EP0095638A1 EP 0095638 A1 EP0095638 A1 EP 0095638A1 EP 83104789 A EP83104789 A EP 83104789A EP 83104789 A EP83104789 A EP 83104789A EP 0095638 A1 EP0095638 A1 EP 0095638A1
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- EP
- European Patent Office
- Prior art keywords
- alkyl
- formula
- radicals
- hydrogen
- aryl
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- OEVXGSUDJYKUQX-UHFFFAOYSA-N 2-aminobenzene-1,3-dicarbonitrile Chemical class NC1=C(C#N)C=CC=C1C#N OEVXGSUDJYKUQX-UHFFFAOYSA-N 0.000 title 1
- 125000000217 alkyl group Chemical group 0.000 claims abstract description 24
- 150000001875 compounds Chemical class 0.000 claims abstract description 15
- 238000004043 dyeing Methods 0.000 claims abstract description 5
- 125000000753 cycloalkyl group Chemical group 0.000 claims abstract description 4
- 239000000835 fiber Substances 0.000 claims abstract description 4
- -1 alkyl radicals Chemical class 0.000 claims description 19
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 16
- 229910052739 hydrogen Inorganic materials 0.000 claims description 15
- 239000001257 hydrogen Substances 0.000 claims description 15
- 150000001448 anilines Chemical class 0.000 claims description 13
- 239000000975 dye Substances 0.000 claims description 13
- 150000003254 radicals Chemical class 0.000 claims description 9
- 229910052794 bromium Inorganic materials 0.000 claims description 8
- WKBOTKDWSSQWDR-UHFFFAOYSA-N Bromine atom Chemical compound [Br] WKBOTKDWSSQWDR-UHFFFAOYSA-N 0.000 claims description 7
- 150000002431 hydrogen Chemical class 0.000 claims description 7
- 238000000034 method Methods 0.000 claims description 7
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 claims description 7
- 125000003710 aryl alkyl group Chemical group 0.000 claims description 6
- GDTBXPJZTBHREO-UHFFFAOYSA-N bromine Substances BrBr GDTBXPJZTBHREO-UHFFFAOYSA-N 0.000 claims description 6
- 125000004432 carbon atom Chemical group C* 0.000 claims description 6
- 230000008878 coupling Effects 0.000 claims description 6
- 238000010168 coupling process Methods 0.000 claims description 6
- 238000005859 coupling reaction Methods 0.000 claims description 6
- 238000006243 chemical reaction Methods 0.000 claims description 5
- WIJQCPIRWXSWQG-UHFFFAOYSA-N 1,2-benzothiazol-3-amine Chemical class C1=CC=C2C(N)=NSC2=C1 WIJQCPIRWXSWQG-UHFFFAOYSA-N 0.000 claims description 4
- PAYRUJLWNCNPSJ-UHFFFAOYSA-N Aniline Chemical compound NC1=CC=CC=C1 PAYRUJLWNCNPSJ-UHFFFAOYSA-N 0.000 claims description 4
- 238000002360 preparation method Methods 0.000 claims description 4
- 125000003118 aryl group Chemical group 0.000 claims description 3
- RUFPHBVGCFYCNW-UHFFFAOYSA-N 1-naphthylamine Chemical class C1=CC=C2C(N)=CC=CC2=C1 RUFPHBVGCFYCNW-UHFFFAOYSA-N 0.000 claims description 2
- 150000005840 aryl radicals Chemical class 0.000 claims description 2
- 125000001246 bromo group Chemical group Br* 0.000 claims description 2
- 239000007795 chemical reaction product Substances 0.000 claims description 2
- 125000000020 sulfo group Chemical group O=S(=O)([*])O[H] 0.000 claims 1
- 239000004753 textile Substances 0.000 claims 1
- 239000000987 azo dye Substances 0.000 abstract description 5
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 229920000728 polyester Polymers 0.000 abstract description 3
- 239000007858 starting material Substances 0.000 abstract description 2
- 125000002490 anilino group Chemical class [H]N(*)C1=C([H])C([H])=C([H])C([H])=C1[H] 0.000 abstract 1
- 125000000664 diazo group Chemical group [N-]=[N+]=[*] 0.000 abstract 1
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 39
- 239000000203 mixture Substances 0.000 description 10
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 description 9
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 8
- YNAVUWVOSKDBBP-UHFFFAOYSA-N Morpholine Chemical compound C1COCCN1 YNAVUWVOSKDBBP-UHFFFAOYSA-N 0.000 description 8
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 7
- 239000000725 suspension Substances 0.000 description 6
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 description 5
- UHGULLIUJBCTEF-UHFFFAOYSA-N 2-aminobenzothiazole Chemical class C1=CC=C2SC(N)=NC2=C1 UHGULLIUJBCTEF-UHFFFAOYSA-N 0.000 description 4
- 0 CC(C(*)=C(*)C1C(N)S)=C(C)C1=N Chemical compound CC(C(*)=C(*)C1C(N)S)=C(C)C1=N 0.000 description 4
- 229960000583 acetic acid Drugs 0.000 description 4
- 239000002585 base Substances 0.000 description 4
- 239000012362 glacial acetic acid Substances 0.000 description 4
- 239000000047 product Substances 0.000 description 4
- 238000003756 stirring Methods 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- WEVYAHXRMPXWCK-UHFFFAOYSA-N Acetonitrile Chemical compound CC#N WEVYAHXRMPXWCK-UHFFFAOYSA-N 0.000 description 3
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 3
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 238000009835 boiling Methods 0.000 description 3
- 238000001816 cooling Methods 0.000 description 3
- 230000003647 oxidation Effects 0.000 description 3
- 238000007254 oxidation reaction Methods 0.000 description 3
- 238000010992 reflux Methods 0.000 description 3
- IMNIMPAHZVJRPE-UHFFFAOYSA-N triethylenediamine Chemical compound C1CN2CCN1CC2 IMNIMPAHZVJRPE-UHFFFAOYSA-N 0.000 description 3
- 125000004169 (C1-C6) alkyl group Chemical group 0.000 description 2
- IKHGUXGNUITLKF-UHFFFAOYSA-N Acetaldehyde Chemical compound CC=O IKHGUXGNUITLKF-UHFFFAOYSA-N 0.000 description 2
- IAZDPXIOMUYVGZ-WFGJKAKNSA-N Dimethyl sulfoxide Chemical compound [2H]C([2H])([2H])S(=O)C([2H])([2H])[2H] IAZDPXIOMUYVGZ-WFGJKAKNSA-N 0.000 description 2
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 description 2
- AFBPFSWMIHJQDM-UHFFFAOYSA-N N-methylaniline Chemical compound CNC1=CC=CC=C1 AFBPFSWMIHJQDM-UHFFFAOYSA-N 0.000 description 2
- NQRYJNQNLNOLGT-UHFFFAOYSA-N Piperidine Chemical compound C1CCNCC1 NQRYJNQNLNOLGT-UHFFFAOYSA-N 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 239000003054 catalyst Substances 0.000 description 2
- 238000009833 condensation Methods 0.000 description 2
- 230000005494 condensation Effects 0.000 description 2
- 238000006193 diazotization reaction Methods 0.000 description 2
- XBDQKXXYIPTUBI-UHFFFAOYSA-N dimethylselenoniopropionate Natural products CCC(O)=O XBDQKXXYIPTUBI-UHFFFAOYSA-N 0.000 description 2
- 239000000986 disperse dye Substances 0.000 description 2
- VLSAOGJJSUPXEU-UHFFFAOYSA-N ethyl 4-amino-3,5-dicyano-2-methylbenzoate Chemical compound CCOC(=O)C1=CC(C#N)=C(N)C(C#N)=C1C VLSAOGJJSUPXEU-UHFFFAOYSA-N 0.000 description 2
- XYIBRDXRRQCHLP-UHFFFAOYSA-N ethyl acetoacetate Chemical compound CCOC(=O)CC(C)=O XYIBRDXRRQCHLP-UHFFFAOYSA-N 0.000 description 2
- 238000005580 one pot reaction Methods 0.000 description 2
- 230000001590 oxidative effect Effects 0.000 description 2
- 238000006798 ring closing metathesis reaction Methods 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- 125000004178 (C1-C4) alkyl group Chemical group 0.000 description 1
- UKFADLGENFFWHR-UHFFFAOYSA-N (Methylthio)acetone Chemical compound CSCC(C)=O UKFADLGENFFWHR-UHFFFAOYSA-N 0.000 description 1
- CSNIZNHTOVFARY-UHFFFAOYSA-N 1,2-benzothiazole Chemical compound C1=CC=C2C=NSC2=C1 CSNIZNHTOVFARY-UHFFFAOYSA-N 0.000 description 1
- GGKJIHFCTGZXRH-UHFFFAOYSA-N 2-amino-4-methyl-5-methylsulfanylbenzene-1,3-dicarbonitrile Chemical compound CSC1=CC(C#N)=C(N)C(C#N)=C1C GGKJIHFCTGZXRH-UHFFFAOYSA-N 0.000 description 1
- QCWHSGKXZCDNFS-UHFFFAOYSA-N 2-amino-5-bromo-4-methylbenzene-1,3-dicarbonitrile Chemical compound CC1=C(Br)C=C(C#N)C(N)=C1C#N QCWHSGKXZCDNFS-UHFFFAOYSA-N 0.000 description 1
- JXPDNDHCMMOJPC-UHFFFAOYSA-N 2-hydroxybutanedinitrile Chemical compound N#CC(O)CC#N JXPDNDHCMMOJPC-UHFFFAOYSA-N 0.000 description 1
- AHSRQQVTPJEDMK-UHFFFAOYSA-N 4-amino-3,5-dicyano-2-methylbenzoic acid Chemical compound CC1=C(C(O)=O)C=C(C#N)C(N)=C1C#N AHSRQQVTPJEDMK-UHFFFAOYSA-N 0.000 description 1
- RXQNKKRGJJRMKD-UHFFFAOYSA-N 5-bromo-2-methylaniline Chemical compound CC1=CC=C(Br)C=C1N RXQNKKRGJJRMKD-UHFFFAOYSA-N 0.000 description 1
- 101100387923 Caenorhabditis elegans dos-1 gene Proteins 0.000 description 1
- 241000694440 Colpidium aqueous Species 0.000 description 1
- WRQNANDWMGAFTP-UHFFFAOYSA-N Methylacetoacetic acid Chemical compound COC(=O)CC(C)=O WRQNANDWMGAFTP-UHFFFAOYSA-N 0.000 description 1
- KFDLHDGFDLHFRW-UHFFFAOYSA-N [O-][N+](Br)=O Chemical compound [O-][N+](Br)=O KFDLHDGFDLHFRW-UHFFFAOYSA-N 0.000 description 1
- 150000001298 alcohols Chemical class 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 125000003545 alkoxy group Chemical group 0.000 description 1
- 125000004414 alkyl thio group Chemical group 0.000 description 1
- UYJXRRSPUVSSMN-UHFFFAOYSA-P ammonium sulfide Chemical compound [NH4+].[NH4+].[S-2] UYJXRRSPUVSSMN-UHFFFAOYSA-P 0.000 description 1
- 239000000010 aprotic solvent Substances 0.000 description 1
- 238000005815 base catalysis Methods 0.000 description 1
- 230000031709 bromination Effects 0.000 description 1
- 238000005893 bromination reaction Methods 0.000 description 1
- 150000001732 carboxylic acid derivatives Chemical class 0.000 description 1
- 150000001733 carboxylic acid esters Chemical class 0.000 description 1
- 229920002678 cellulose Polymers 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 125000000113 cyclohexyl group Chemical group [H]C1([H])C([H])([H])C([H])([H])C([H])(*)C([H])([H])C1([H])[H] 0.000 description 1
- HPNMFZURTQLUMO-UHFFFAOYSA-N diethylamine Chemical compound CCNCC HPNMFZURTQLUMO-UHFFFAOYSA-N 0.000 description 1
- 150000002148 esters Chemical group 0.000 description 1
- AEOCXXJPGCBFJA-UHFFFAOYSA-N ethionamide Chemical compound CCC1=CC(C(N)=S)=CC=N1 AEOCXXJPGCBFJA-UHFFFAOYSA-N 0.000 description 1
- UWKDEMVYYZYPSG-UHFFFAOYSA-N ethyl 3-amino-7-cyano-6-methyl-2,1-benzothiazole-5-carboxylate Chemical compound N#CC1=C(C)C(C(=O)OCC)=CC2=C(N)SN=C21 UWKDEMVYYZYPSG-UHFFFAOYSA-N 0.000 description 1
- XDTWFDGVKXBMLN-UHFFFAOYSA-N ethyl 4-amino-3,5-dicyano-2,6-dimethylbenzoate Chemical compound CCOC(=O)C1=C(C)C(C#N)=C(N)C(C#N)=C1C XDTWFDGVKXBMLN-UHFFFAOYSA-N 0.000 description 1
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 1
- 239000000706 filtrate Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000002209 hydrophobic effect Effects 0.000 description 1
- LVWZTYCIRDMTEY-UHFFFAOYSA-N metamizole Chemical compound O=C1C(N(CS(O)(=O)=O)C)=C(C)N(C)N1C1=CC=CC=C1 LVWZTYCIRDMTEY-UHFFFAOYSA-N 0.000 description 1
- 239000012452 mother liquor Substances 0.000 description 1
- FPUKYOSOAAPHTN-UHFFFAOYSA-N n-[3-(diethylamino)phenyl]acetamide Chemical compound CCN(CC)C1=CC=CC(NC(C)=O)=C1 FPUKYOSOAAPHTN-UHFFFAOYSA-N 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 238000010899 nucleation Methods 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 230000001376 precipitating effect Effects 0.000 description 1
- BDERNNFJNOPAEC-UHFFFAOYSA-N propan-1-ol Chemical compound CCCO BDERNNFJNOPAEC-UHFFFAOYSA-N 0.000 description 1
- 235000019260 propionic acid Nutrition 0.000 description 1
- IUVKMZGDUIUOCP-BTNSXGMBSA-N quinbolone Chemical compound O([C@H]1CC[C@H]2[C@H]3[C@@H]([C@]4(C=CC(=O)C=C4CC3)C)CC[C@@]21C)C1=CCCC1 IUVKMZGDUIUOCP-BTNSXGMBSA-N 0.000 description 1
- 238000003303 reheating Methods 0.000 description 1
- 238000007127 saponification reaction Methods 0.000 description 1
- 150000003335 secondary amines Chemical class 0.000 description 1
- 238000007086 side reaction Methods 0.000 description 1
- 238000000859 sublimation Methods 0.000 description 1
- 230000008022 sublimation Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- IIACRCGMVDHOTQ-UHFFFAOYSA-N sulfamic acid Chemical compound NS(O)(=O)=O IIACRCGMVDHOTQ-UHFFFAOYSA-N 0.000 description 1
- GLBQVJGBPFPMMV-UHFFFAOYSA-N sulfilimine Chemical compound S=N GLBQVJGBPFPMMV-UHFFFAOYSA-N 0.000 description 1
- 150000003457 sulfones Chemical class 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 239000012209 synthetic fiber Substances 0.000 description 1
- 229920002994 synthetic fiber Polymers 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D275/00—Heterocyclic compounds containing 1,2-thiazole or hydrogenated 1,2-thiazole rings
- C07D275/04—Heterocyclic compounds containing 1,2-thiazole or hydrogenated 1,2-thiazole rings condensed with carbocyclic rings or ring systems
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C255/00—Carboxylic acid nitriles
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09B—ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES, e.g. PIGMENTS; MORDANTS; LAKES
- C09B29/00—Monoazo dyes prepared by diazotising and coupling
- C09B29/0025—Monoazo dyes prepared by diazotising and coupling from diazotized amino heterocyclic compounds
- C09B29/0074—Monoazo dyes prepared by diazotising and coupling from diazotized amino heterocyclic compounds the heterocyclic ring containing nitrogen and sulfur as heteroatoms
- C09B29/0077—Monoazo dyes prepared by diazotising and coupling from diazotized amino heterocyclic compounds the heterocyclic ring containing nitrogen and sulfur as heteroatoms containing a five-membered heterocyclic ring with one nitrogen and one sulfur as heteroatoms
- C09B29/0081—Isothiazoles or condensed isothiazoles
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09B—ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES, e.g. PIGMENTS; MORDANTS; LAKES
- C09B29/00—Monoazo dyes prepared by diazotising and coupling
- C09B29/06—Monoazo dyes prepared by diazotising and coupling from coupling components containing amino as the only directing group
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09B—ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES, e.g. PIGMENTS; MORDANTS; LAKES
- C09B29/00—Monoazo dyes prepared by diazotising and coupling
- C09B29/34—Monoazo dyes prepared by diazotising and coupling from other coupling components
- C09B29/36—Monoazo dyes prepared by diazotising and coupling from other coupling components from heterocyclic compounds
- C09B29/3604—Monoazo dyes prepared by diazotising and coupling from other coupling components from heterocyclic compounds containing only a nitrogen as heteroatom
- C09B29/3617—Monoazo dyes prepared by diazotising and coupling from other coupling components from heterocyclic compounds containing only a nitrogen as heteroatom containing a six-membered heterocyclic with only one nitrogen as heteroatom
- C09B29/3643—Monoazo dyes prepared by diazotising and coupling from other coupling components from heterocyclic compounds containing only a nitrogen as heteroatom containing a six-membered heterocyclic with only one nitrogen as heteroatom from quinolines or hydrogenated quinolines
Definitions
- alkyl radicals are methyl and - in the case of the carboxylic acid ester - also ethyl.
- the preferred cycloalkyl radical is cyclohexyl.
- the starting products II and III are known or can be obtained by methods known per se (cf. J.pr. Chem. 313, 678 (1971), Bl.chem.Soc. Japan 2, 306 (1927) and DE-OS 2 340 569).
- the condensation of II with III is carried out by base catalysis in the presence of an organic solvent at temperatures from -10 to 40 ° C., preferably from -5 to 25 ° C.
- Suitable base catalysts are alkali or alkaline earth alcoholates and preferably secondary amines, such as diethylamine, morpholine, piperidine and N-methylaniline.
- These catalysts can be used in molar amounts (based on II and III).
- Suitable solvents are alcohols, such as methanol, ethanol and propanol, and dipolar aprotic solvents, such as acetonitrile and dimethylformamide.
- the bromination of the carboxylic acid is carried out, for example, in hydrochloric acid solution.
- the base e.g. morpholine
- 1 equivalent of the base is added at 0 ° C. and the reaction is completed by stirring at room temperature. In exceptional cases, heating to temperatures of 60-100 ° C is required.
- the new aniline derivatives (I) are versatile and are suitable, for example, for the production of valuable azo dyes by direct diazotization and subsequent coupling to suitable coupling components.
- the compounds VIa or VIb or mixtures of the two are formed.
- azo dyes derived from the aminobenzisothiazoles VI are entirely new and are also the subject of this invention. They correspond to the formula where K represents the rest of a coupling component and the remaining radicals have the meaning given above.
- Preferred dyes of formula VII are disperse dyes. They correspond to the formula wherein K 'is a sulfo-free coupling component of the aminobenzene or aminonaphthalene series and X and Y have the general and special meanings mentioned above.
- the new dyes are suitable for dyeing a wide variety of fibers.
- the preferred disperse dyes of the formula VIII are very strong in color and are naturally used for dyeing hydrophobic, synthetic fibers, in particular polyester and cellulose ester fibers, on which they give violet to blue dyeings with a high fastness level.
- a solution of 37.5 ml of 37% strength is added dropwise to 65 g of ethyl acetoacetate at 0 ° C. in 30 minutes.
- aqueous formaldehyde in 50 ml of methanol a solution of 66 g of malodinitrile in 50 ml of methanol is then added dropwise at 0.degree.
- the mixture is stirred for 30 minutes and then a solution of 43.3 ml of morpholine in 50 ml of methanol is run in at 0 ° C. in 2.5 hours.
- the mixture is stirred at 0 ° C. for 12 hours and at room temperature for 48 hours. It is suctioned off and washed with a little methanol. Yield 50.5 g. After boiling for 12 hours on a reflux condenser and seeding, a further 4.6 g can be obtained from the mother liquor.
- the following dyes can be obtained by an analogous or similar process.
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Coloring (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
Anilinderivate der Formel <IMAGE> worin X = Alkyl, Z = H oder Alkyl, Y = S-Alkyl, SO2-Alkyl, CO2-R (R = Alkyl, Cycloalkyl oder H) oder - falls Z = H - auch Br bedeuten, sind Diazokomponenten zur Herstellung wertvoller Azofarbstoffe sowie Ausgangsmaterialien zur Herstellung von Verbindungen der Formel <IMAGE> sowie davon abgeleiteten neuen Azofarbstoffen. die - in ihrer nichtionischen Form - sich ausgezeichnet zum Farben von Polyesterfasern in blauen Farbtonen eignen.Aniline derivatives of the formula <IMAGE> in which X = alkyl, Z = H or alkyl, Y = S-alkyl, SO2-alkyl, CO2-R (R = alkyl, cycloalkyl or H) or - if Z = H - also mean Br, are diazo components for the production of valuable azo dyes and starting materials for the production of compounds of the formula <IMAGE> and new azo dyes derived therefrom. which - in their non-ionic form - are ideal for dyeing polyester fibers in blue shades.
Description
Gegenstand der Erfindung sind Anilinderivate der Formel worin
- X Alkyl,
- Y -S-Alkyl, -SO2-Allcyl, -CO2-R oder - falls Z = H - auch Brom
- Z Wasserstoff oder Alkyl bedeuten, wobei
- R für Alkyl, Cycloalkyl oder Wasserstoff steht und die Alkylreste 1-6, vorzugsweise 1-4 C-Atome und die Cycloalkylreste 5 oder 6 Ring-C-Atome aufweisen,
- X alkyl,
- Y -S-alkyl, -SO 2 -allcyl, -CO 2 -R or - if Z = H - also bromine
- Z is hydrogen or alkyl, where
- R represents alkyl, cycloalkyl or hydrogen and the alkyl radicals have 1-6, preferably 1-4 C atoms and the cycloalkyl radicals have 5 or 6 ring C atoms,
sowie deren Herstellung und Verwendung zun Aufbau von Aminobenzisothiazolen und davon abgeleiteten Azofarbstoffen.as well as their production and use for the construction of aminobenzisothiazoles and azo dyes derived therefrom.
Besonders bevorzugte Alkylreste sind Methyl und - im Falle des Carbonsäureesters - auch Ethyl. Bevorzugter Cycloalkylrest ist Cyclohexyl.Particularly preferred alkyl radicals are methyl and - in the case of the carboxylic acid ester - also ethyl. The preferred cycloalkyl radical is cyclohexyl.
Bevorzugte Anilinderivate sind solche der Formel I, worin
- X Methyl und
- Z Wasserstoff bedeuten.
- X methyl and
- Z is hydrogen.
Ganz besonders bevorzugt sind Verbindungen der Formel I, worin
- X und Z die vorstehend genannten allgemeinen und besonderen Bedeutungen haben und
- Y für -CO2-C1-C6-Alkyl steht.
- X and Z have the general and special meanings mentioned above and
- Y represents -CO 2 -C 1 -C 6 alkyl.
Während 2,6-Dicyananiline mit einem Nitro-, Brom oder Alkyl-Substituenten in 4-Stellung, einem Alkylrest in 3/5-Stellung, einem Alkylmercaptorest in 3-Stellung bekannt sind (vgl. GB 1 127 085, DOS 1 644 177, DOS 2 605 622, DOS 2 137 719, DOS 2 340 569, DDR 142 542), sind die Verbindungen der Formel I bislang nicht in der Literatur beschrieben worden.While 2,6-dicyananilines with a nitro, bromine or alkyl substituent in the 4-position, an alkyl radical in the 3/5 position, an alkyl mercapto radical in the 3-position are known (cf. GB 1 127 085, DOS 1 644 177 , DOS 2 605 622, DOS 2 137 719, DOS 2 340 569, DDR 142 542), the compounds of the formula I have not hitherto been described in the literature.
Es wurde nun gefunden, daß man die neuen Anilinderivate auf einfache Weise erhält, wenn man Verbindungen der Formel
- Y' für S-Alkyl oder -C02R steht,
- mit Verbindungen der Formel
- Y 'represents S-alkyl or -C0 2 R,
- with compounds of the formula
in an sich bekannter Weise kondensiert und aromatisiert sowie gegebenenfalls in dem Reaktionsprodukt den Rest S-Alkyl zum entsprechenden Alkylsulfonylrest oxidiert oder den Rest COOR zum Carbonsäurerest verseift und diesen durch Umsetzung mit Brom durch einen Bromsubstituenten ersetzt.condensed and flavored in a manner known per se and optionally oxidized the radical S-alkyl to the corresponding alkylsulfonyl radical in the reaction product or saponified the radical COOR to the carboxylic acid radical and replaced this by reaction with bromine by a bromine substituent.
Die Ausgangsprodukte II und III sind bekannt bzw. nach an sich bekannten Methoden erhältlich (vgl. J.pr.Chem. 313, 678 (1971), Bl.chem.Soc. Japan 2, 306 (1927) und DE-OS 2 340 569).The starting products II and III are known or can be obtained by methods known per se (cf. J.pr. Chem. 313, 678 (1971), Bl.chem.Soc. Japan 2, 306 (1927) and DE-OS 2 340 569).
Die Kondensation von II mit III erfolgt durch Basenkatalyse in Gegenwart eines organischen Lösungsmittels bei Temperaturen von -10 bis 40°C, vorzugsweise von -5 bis 25°C.The condensation of II with III is carried out by base catalysis in the presence of an organic solvent at temperatures from -10 to 40 ° C., preferably from -5 to 25 ° C.
Geeignete Basenkatalysatoren sind Alkali- oder Erdalkalialkoholate sowie vorzugsweise sekundäre Amine, wie Diethylamin, Morpholin, Piperidin und N-Methylanilin.Suitable base catalysts are alkali or alkaline earth alcoholates and preferably secondary amines, such as diethylamine, morpholine, piperidine and N-methylaniline.
Diese Katalysatoren können in bis zu molaren Mengen (bezogen auf II und III) eingesetzt werden.These catalysts can be used in molar amounts (based on II and III).
Geeignete Lösungsmittel sind Alkohole, wie Methanol, Ethanol und Propanol sowie dipolare aprotische Lösungsmittel, wie Acetonitril und Dimethylformamid.Suitable solvents are alcohols, such as methanol, ethanol and propanol, and dipolar aprotic solvents, such as acetonitrile and dimethylformamide.
In den meisten Fällen gelingt bereits unter den vorstehend genannten Bedingungen für die Kondensation auch die Aromatisierung. Anderenfalls ist eine kurzzeitige Nacherhitzung, zweckmäßigerweise bei Siedetemperatur des Lösungsmittels erforderlich.In most cases, the condensation conditions already succeed under the conditions mentioned above the flavoring. Otherwise a brief reheating is necessary, advantageously at the boiling point of the solvent.
Die Oxidation der Verbindungen mit Y = S-Alkyl sowie die Verseifung von Verbindungen mit Y = COOR erfolgt nach üblichen Methoden. Die Bromierung der Carbonsäure wird beispielsweise in salzsaurer Lösung durchgeführt.The oxidation of the compounds with Y = S-alkyl and the saponification of compounds with Y = COOR is carried out according to customary methods. The bromination of the carboxylic acid is carried out, for example, in hydrochloric acid solution.
In besonders vorteilhafter Weise erhält man die neuen Anilinderivate, wenn man die Synthese als Eintopfreaktion gestaltet, indem man ein Gemisch aus
- a) 1 Äquivalent einer Verbindung der Formel
- b) 1 Äquivalent einer Verbindung der Formel
- c) 2 Äquivalenten Malodinitril in Gegenwart einer Base umsetzt.
- a) 1 equivalent of a compound of the formula
- b) 1 equivalent of a compound of the formula
- c) reacting 2 equivalents of malodinitrile in the presence of a base.
Vorzugsweise wird 1 Äquivalent der Base (z. B. Morpholin)bei 0°C zugesetzt und die Reaktion durch Rühren bei Raumtemperatur zu Ende geführt. In Ausnahmefällen ist eine Erwärmung auf Temperaturen von 60-100°C vorzunehmen.Preferably, 1 equivalent of the base (e.g. morpholine) is added at 0 ° C. and the reaction is completed by stirring at room temperature. In exceptional cases, heating to temperatures of 60-100 ° C is required.
Obwohl die Herstellung der neuen Anilinderivate (I) zum großen Teil nach an sich bekannten Methoden erfolgt, ist der glatte Reaktionsverlauf als überraschend zu bezeichnen, da beispielsweise durch die Verwendung des Estersubstituenten Y = CO2R das Auftreten von Nebenreaktionen nicht auszuschließen war (vgl. Pyridonbildung gemäß Austr. J. Chem. 28, 581 (1975)).Although the production of the new aniline derivatives (I) largely takes place according to methods known per se, the smooth course of the reaction can be described as surprising, since the occurrence of side reactions could not be ruled out, for example, by using the ester substituent Y = CO 2 R (cf. Pyridone formation according to Austr. J. Chem. 28, 581 (1975)).
Die neuen Anilinderivate (I) sind vielseitig verwendbar und eignen sich beispielsweise zur Herstellung von wertvollen Azofarbstoffen durch unmittelbare Diazotierung und anschließende Kupplung auf geeignete Kupplungskomponenten.The new aniline derivatives (I) are versatile and are suitable, for example, for the production of valuable azo dyes by direct diazotization and subsequent coupling to suitable coupling components.
Besonders interessante Farbstoffe erhält man jedoch, wenn man die Aniline der Formel I durch H2S-Anlagerung (zum Monothioamid) und anschließenden oxidativen Ringschluß in Aminobenzisothiazole der Formel
Die Herstellung der Aminobenzthiazole (VI) erfolgt dabei nach an sich bekannten Methoden (vgl. DE-AS 1 544 375 = GB 1 112 146, DE-OS 2 412 975 = GB 1 493 037, DE-OS 1 644 169 und DE-OS 2 617 807).The aminobenzothiazoles (VI) are prepared by methods known per se (cf. DE-AS 1 544 375 = GB 1 112 146, DE-OS 2 412 975 = GB 1 493 037, DE-OS 1 644 169 and DE- OS 2 617 807).
Je nach Substitutionsmuster der als Ausgangsmaterialien verwendeten Aniline (I) entstehen die Verbindungen VIa oder VIb oder Mischungen der beiden.Depending on the substitution pattern of the anilines (I) used as starting materials, the compounds VIa or VIb or mixtures of the two are formed.
Anders ist die Situation bei dem Einsatz der bevorzugten Verbindungen der Formel I mit Z = H, wobei aller Wahrscheinlichkeit nach ausschließlich das VIa-Isomere entsteht.The situation is different when using the preferred compounds of the formula I with Z = H, with the probability that only the VIa isomer is formed.
Verbindungen der Formel VI mit Y = S02-Alkyl können im übrigen auch durch nachträgliche Oxidation von Verbindungen der Formel mit Y = S-Alkyl hergestellt werden, wobei die Oxidation zum Sulfon gegebenenfalls als Eintopfreaktion zusammen mit dem oxidativen Ringschluß durchgeführt werden kann.Compounds of the formula VI with Y = S0 2 alkyl can moreover also be prepared by subsequent oxidation of compounds of the formula with Y = S-alkyl, the oxidation to the sulfone optionally being carried out as a one-pot reaction together with the oxidative ring closure.
Die von den Aminobenzisothiazolen VI abgeleiteten Azofarbstoffe sind durchweg neu und ebenfalls Gegenstand dieser Erfindung. Sie entsprechen der Formel
Bevorzugte Farbstoffe der Formel VII sind Dispersionsfarbstoffe. Sie entsprechen der Formel
Besonders bevorzugt sind solche Farbstoffe der Formel VIII, worin
- K' für einen Rest der Formel
- R 1 Wasserstoff, -CH3, Cl, CF3 oder vorzugsweise -NH-W,
- W -COH, -CO-Alkyl, -CO-Aryl, -CO2-Alkyl, -CO2-Aryl, -SO2-Alkyl, -SO2-Aryl oder -PO(O-Alkyl)2
- R2 Wasserstoff, Alkyl, -0-Alkyl, O-Aryl, Cl oder Br,
- R3 Wasserstoff, Alkyl, Aryl oder Aralkyl und
- R4 Wasserstoff, Alkyl oder Aralkyl bedeuten,
und die vorstehend genannten Alkylreste 1-6, vorzugsweise 1-4 C-Atome haben und durch OH, Cl, -O-C1-C4-Alkyl, -O-Phenyl, CN, -CO2-C1-C4-Alkyl oder -OCO-NH-C1-C4-Alkyl substituiert sein können, die Arylreste Phenylreste und die Aralkylreste Phenyl-C1-C3-alkylreste sind, welche durch Cl, CH3 oder C1-C2-Alkoxy substituiert sein können, und wobei die Reste R2 und R4 auch gemeinsam eine C3-Aikylenkette bilden können.Dyes of the formula VIII in which
- K 'for a remainder of the formula
- R 1 is hydrogen, -CH 3 , Cl, CF 3 or preferably -NH-W,
- W -COH, -CO-alkyl, -CO-aryl, -CO 2 -alkyl, -CO 2 -aryl, -SO 2 -alkyl, -SO 2 -aryl or -PO (O-alkyl) 2
- R 2 is hydrogen, alkyl, -0-alkyl, O-aryl, Cl or Br,
- R 3 is hydrogen, alkyl, aryl or aralkyl and
- R 4 is hydrogen, alkyl or aralkyl,
and the above-mentioned alkyl radicals have 1-6, preferably 1-4 C atoms and by OH, Cl, -OC 1 -C 4 alkyl, -O-phenyl, CN, -CO 2 -C 1 -C 4 alkyl or -OCO-NH-C 1 -C 4 alkyl can be substituted, the aryl radicals are phenyl radicals and the aralkyl radicals are phenyl-C 1 -C 3 alkyl radicals which are substituted by Cl, CH 3 or C 1 -C 2 alkoxy can, and wherein the radicals R 2 and R 4 can also together form a C 3 alkylene chain.
Ganz besonders bevorzugt sind Farbstoffe der Formel (VIII), worin
- X CH3,
- Y SCH3, SO2CH3 oder - vorzugsweise - -CO2C1-C2-Alkyl,
- W1 -COH, -CO-Alkyl, -CO-Aryl, -CO2-Alkyl oder -S02-Alkyl
- R2 H oder -O-C1-C4-Alkyl,
- R3/R4 Wasserstoff, C1-C6-Allcyl oder C1-C4-Alkyl, -O-C1-C6-Alkyl
bedeuten.Dyes of the formula (VIII) in which
- X CH 3 ,
- Y SCH 3 , SO 2 CH 3 or - preferably - -CO 2 C 1 -C 2 alkyl,
- W 1 -COH, -CO-alkyl, -CO-aryl, -CO 2 -alkyl or -S0 2 -alkyl
- R 2 H or -OC 1 -C 4 alkyl,
- R 3 / R 4 are hydrogen, C 1 -C 6 alkyl or C 1 -C 4 alkyl, -OC 1 -C 6 alkyl
mean.
Die neuen Farbstoffe eignen sich zum Färben der verschiedensten Faserarten. Die bevorzugten Dispersionsfarbstoffe der Formel VIII sind sehr farbstark und werden naturgemäß zum Färben von hydrophoben, synthetischen Fasern, insbesondere Polyester- und Celluloseesterfasern eingesetzt, auf denen sie violette bis blaue Färbungen mit hohem Echtheitsniveau ergeben.The new dyes are suitable for dyeing a wide variety of fibers. The preferred disperse dyes of the formula VIII are very strong in color and are naturally used for dyeing hydrophobic, synthetic fibers, in particular polyester and cellulose ester fibers, on which they give violet to blue dyeings with a high fastness level.
Zu 65 g Acetessigsäureethylester tropft man bei 0°C in 30 Min. eine Lösung von 37,5 ml 37-proz. wäßrigem Formaldehyd in 50 ml Methanol zu; anschließend läßt man bei 0°C eine Lösung von 66 g Malodinitril in 50 ml Methanol zutropfen. Man läßt 30 Min. nachrühren und läßt dann in 2,5 Stunden bei 0°C eine Lösung von 43,3 ml Morpholin in 50 ml Methanol zulaufen. Man rührt 12 Stunden bei 0°C und 48 Stunden bei Raumtemperatur. Man saugt ab und wäscht mit wenig Methanol. Ausbeute 50,5 g. Aus der Mutterlauge können nach 12-stündigem Kochen am Rückflußkühler und Animpfen weitere 4,6 g gewonnen werden.A solution of 37.5 ml of 37% strength is added dropwise to 65 g of ethyl acetoacetate at 0 ° C. in 30 minutes. aqueous formaldehyde in 50 ml of methanol; a solution of 66 g of malodinitrile in 50 ml of methanol is then added dropwise at 0.degree. The mixture is stirred for 30 minutes and then a solution of 43.3 ml of morpholine in 50 ml of methanol is run in at 0 ° C. in 2.5 hours. The mixture is stirred at 0 ° C. for 12 hours and at room temperature for 48 hours. It is suctioned off and washed with a little methanol. Yield 50.5 g. After boiling for 12 hours on a reflux condenser and seeding, a further 4.6 g can be obtained from the mother liquor.
Fp.: 149°C; me+: 229;Mp: 149 ° C; m e +: 229;
1H-N.M.R (DMSO-d6/TMS): δ= 1,35 (t, 3H) ; 1H - NM R (DMSO-d6 / TMS): δ = 1.35 (t, 3H);
2,65 (s, 3H) ; 4,26 (q, 2H) ; 7,17 (s, 2H) ; 8,02 (s, 1H).2.65 (s, 3H); 4.26 (q, 2H); 7.17 (s. 2H); 8.02 (s, 1H).
Zu 43,5 g Acetessigsäuremethylester tropft man bei 0°C eine Lösung von 28,1 ml 37-proz. wäßrigem Formaldehyd in 25 ml Methanol und läßt anschließend eine Lösung von 33 g Malodinitril in 25 ml Methanol zulaufen. Bei 0°C wird in 1,5 Stunden eine Lösung von 28 g Triethylendiamin (1,4-Diazabicyclo[2,2,2]octan) in 25 ml Methanol zugetropft. Man rührt weitere 20 Stunden bei 0°C und erwärmt dann 7 Stunden zum Sieden am Rückflußkühler. Nach Abkühlen wird abgesaugt und mit 20 ml Methanol nachgewaschen. Ausbeute 16,2 g m +: 215; Fp: 146°C.A solution of 28.1 ml 37 percent is added dropwise to 43.5 g methyl acetoacetate at 0 ° C. aqueous formaldehyde in 25 ml of methanol and then runs a solution of 33 g of malodinitrile in 25 ml of methanol. A solution of 28 g of triethylenediamine (1,4-diazabicyclo [2.2.2] octane) in 25 ml of methanol is added dropwise at 0 ° C. in 1.5 hours. The mixture is stirred for a further 20 hours at 0.degree. C. and then heated at the reflux condenser for 7 hours. After cooling, the product is filtered off with suction and washed with 20 ml of methanol. Yield 16.2 gm + : 215; Mp: 146 ° C.
Zu 27,1 g 96-proz. 1-Methylmercapto-2-propanon läßt man nacheinander bei 0°C eine Lösung von 18,8 ml 37-proz. wäßrigem Formaldehyd in 25 ml Methanol, eine Lösung von 33 g Malodinitril in 50 ml Methanol und eine Lösung von 21,65 ml Morpholin in 25 ml Methanol zutropfen. Man rührt 5 Stunden bei 0°C, 48 Stunden bei Raumtemperatur und saugt dann 6,8 g schwach gelbliche Kristalle vom Fp. 164°C ab. me+: 203. Das Filtrat wird 5,5 Stunden zum Sieden erhitzt. Nach Abkühlen saugt man weitere 6,7 g 2,6-Dicyan-3-methyl-4-methylmercaptoanilin ab.To 27.1 g 96 percent. 1-Methylmercapto-2-propanone is left in succession at 0 ° C a solution of 18.8 ml 37 percent. dropwise aqueous formaldehyde in 25 ml of methanol, a solution of 33 g of malodinitrile in 50 ml of methanol and a solution of 21.65 ml of morpholine in 25 ml of methanol. The mixture is stirred for 5 hours at 0 ° C., 48 hours at room temperature and then 6.8 g of pale yellowish crystals of mp. 164 ° C. are filtered off. m e +: 203. The filtrate is heated to boiling for 5.5 hours. After cooling, a further 6.7 g of 2,6-dicyan-3-methyl-4-methylmercaptoaniline are suctioned off.
Analog dem Verfahren von Beispiel 2 erhält man durch Reaktion von Acetessigsäureethylester mit Acetaldehyd und Malonitril 2,6-Dimethyl-3,5-dicyan-4-amino-benzoesäureethylester. me+: 243; Fp. 206°C.Analogously to the process of Example 2, the reaction of ethyl acetoacetate with acetaldehyde and malonitrile gives 2,6-dimethyl-3,5-dicyan-4-amino-benzoic acid ethyl ester. m e +: 243; Mp 206 ° C.
Eine Suspension von 48,8 g 2-Methyl-3,5-dicyan-4-amino- benzoesäureethylester in 300 ml konz. Salzsäure wird 20 Stunden am Rückflußkühler gekocht. Man saugt ab und wäscht mit Wasser neutral. Ausbeute 36 g. Durch Lösen in verd. Natronlauge und Ausfällen mit verd. Salzsäure kann das Produkt nachgereinigt werden. IR: 2220 cm-1(CN); Fp. 300°C; 1H-N.M.R. (DMSO-D6/TMS); δ= 2,68 (s, 3H); 7,15 (s, 3H) ; 8,13 (s, 1H) .A suspension of 48.8 g of 2-methyl-3,5-dicyan-4-amino-benzoic acid ethyl ester in 300 ml of conc. Hydrochloric acid is boiled for 20 hours on a reflux condenser. It is suctioned off and washed neutral with water. Yield 36 g. The product can be cleaned by dissolving in dilute sodium hydroxide solution and precipitating with dilute hydrochloric acid. IR : 2220 cm -1 (CN); F p. 300 ° C; 1 HN.MR ( DM S O -D 6 / TMS ); δ = 2.68 (s, 3H); 7.15 (s. 3H); 8.13 (s, 1H).
Zu einer Suspension von 10,05 g 2-Methyl-3,5-dicyan-4-amino-benzoesäure in 250 ml konz. Salzsäure tropft man bei Raumtemperatur unter Rühren 8 g Brom zu und setzt nach 48 Stunden nochmals 8 g Brom zu. Man rührt nochmals 48 Stunden und erwärmt anschließend 3 Stunden auf 50°C. Nach Abkühlen saugt man 11,8 g 2,6-Dicyan-3-methyl-4-brom-anilin ab.Concentrated to a suspension of 10.05 g of 2-methyl-3,5-dicyan-4-amino-benzoic acid in 250 ml. Hydrochloric acid is added dropwise at room temperature with stirring, 8 g of bromine and another 8 g of bromine are added after 48 hours. The mixture is stirred for another 48 hours and then heated to 50 ° C. for 3 hours. After cooling, 11.8 g of 2,6-dicyan-3-methyl-4-bromo-aniline are suctioned off.
me+: 235 (100 %), 237 (97 %) Fp. 212°C.m e +: 235 (100%), 237 (97%) mp 212 ° C.
Eine Suspension von 18,3 g 2-Methyl-4-amino-3,5-dicyan- benzoesäureethylester in 100 ml Methanol wurde mit 100 ml 40 proz. Ammoniumsulfidlösung versetzt und 18 Stunden bei 25°C gerührt. Es wurde abgesaugt und mit Wasser gewaschen. Ausbeute: 18,5 g Fp. 202°C. M e +: 263 (67,5 %)A suspension of 18.3 g of 2-methyl-4-amino-3,5-dicyanobenzoic acid ethyl ester in 100 ml of methanol was treated with 100 ml of 40 percent. Ammonium sulfide solution was added and the mixture was stirred at 25 ° C. for 18 hours. It was suctioned off and washed with water. Yield: 18.5 g mp 202 ° C. M e + : 263 (67.5 % )
Eine Suspension von 18,4 g 2-Methyl-3-cyan-4-amino-5-thiocarbonamido-benzoesäureethylester (oder isomerer 2-Methyl-3-thiocarbonamido-4-amino-5-cyan-benzoesäureethylester) in 75 ml Eisessig werden mit 10,85 g 35 proz. Wasserstoffperoxid unter Rühren versetzt. Die Temperatur steigt bis auf 60°C und die Farbe der Suspension schlägt nach Gelb um. Man läßt 30 Minuten nachrühren, saugt ab und wäscht mit Eisessig und Wasser. Ausbeute: 17,9 g (98 % d.Th.) M +: 261 (100 %).A suspension of 18.4 g of 2-methyl-3-cyano-4-amino-5-thiocarbonamido-benzoic acid ethyl ester (or isomeric 2-methyl-3-thiocarbonamido-4-amino-5-cyano-benzoic acid ethyl ester) in 75 ml of glacial acetic acid with 10.85 g 35 percent Hydrogen peroxide added with stirring. The temperature rises to 60 ° C and the color of the suspension changes to yellow. The mixture is stirred for 30 minutes, filtered off and washed with glacial acetic acid and water. Yield: 17.9 g (98% of theory) M +: 261 (100%).
Zu einer Suspension von 7,57 g 3-Amino-5-carboethoxy-6-methyl-7-cyan-2,1-benzisothiazols in 40 ml Propionsäure und 80 ml Eisessig tropfte man bei 0°C 4,8 ml 42 proz. Nitrosylschwefelsäure. Es wurde eine weitere Stunde bei 0°C gerührt und dann geklärt. Die Lösung der Diazotierung ließ man bei 0°C in eine Lösung von 7,14 g 3-Diethylaminoacetanilid in 100 ml Eisessig und 20 ml 10 proz. Aminosulfonsäurelösung einlaufen. Nach Rühren über Nacht wurde abgesaugt, mit Wasser gewaschen und getrocknet. Ausbeute: 12 gTo a suspension of 7.57 g of 3-amino-5-carboethox y- 6-methyl-7-cyan-2,1-benzisothiazole in 40 ml of propionic acid and 80 ml of glacial acetic acid, 4.8 ml of 42 percent was added dropwise at 0.degree . Nitrosylsulfuric acid. The mixture was stirred at 0 ° C. for a further hour and then clarified. The solution of the diazotization was left at 0 ° C. in a solution of 7.14 g of 3-diethylaminoacetanilide in 100 ml of glacial acetic acid and 20 ml of 10 percent. Run in aminosulfonic acid solution. After stirring overnight, the product was filtered off with suction, washed with water and dried. Yield: 12 g
Der Farbstoff färbt Polyester in klarem Blau (Colour Index Hue Indication Chart No. 14) mit guten Echtheiten, insbesondere Licht- und Sublimierechtheit. max (DMF): 620 nm.The dye dyes polyester in clear blue (Color Index Hue Indication Chart No. 14) with good fastness properties, especially fastness to light and sublimation. max (DMF): 620 nm.
Nach analogem oder ähnlichem Verfahren können die nachfolgenden Farbstoffe erhalten werden.
Claims (11)
und die vorstehend genannten Alkylreste 1-6, vorzugsweise 1-4 C-Atome haben und durch OH, Cl, -O-C1-C4-Alkyl, -O-Phenyl, CN, -CO2-C1-C4-Alkyl oder -OCO-NH-C1-C4-Alkyl substituiert sein können, die Arylreste Phenylreste und die Aralkylreste Phenyl-C1-C3-alkylreste sind, welche durch Cl, CH3 oder C1-C2-Alkoxy substituiert sein können und wobei die Reste R2 und R4 auch gemeinsam eine C3-Alkylenkette bilden können.9. Dyes according to claim 8, characterized in that
and the above-mentioned alkyl radicals have 1-6, preferably 1-4 C atoms and by OH, Cl, -OC 1 -C 4 alkyl, -O-phenyl, CN, -CO 2 -C 1 -C 4 alkyl or -OCO-NH-C 1 -C 4 alkyl may be substituted, the aryl radicals are phenyl radicals and the aralkyl radicals are phenyl-C 1 -C 3 -alkyl radicals which can be substituted by Cl, CH 3 or C 1 -C 2 -alkoxy and where the radicals R 2 and R 4 also together form a C 3 -alkylene chain can form.
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DE19823220117 DE3220117A1 (en) | 1982-05-28 | 1982-05-28 | 2,6-DICYANANILINE |
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Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1543620A1 (en) * | 1966-10-15 | 1969-07-31 | Bayer Ag | Process for the preparation of 2,6-dicyano-4-nitroaniline |
DE2617807A1 (en) * | 1976-04-23 | 1977-11-03 | Basf Ag | (3)-Amino (5)-nitro benzoisothiazole diazo components - for azo dyes for polyesters, cellulose acetates, etc. |
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US3573273A (en) * | 1967-06-03 | 1971-03-30 | Basf Ag | Water-insoluble monoazo dyes containing 3-amino-2,1-benzisothiazole coupled to an n,n-disubstituted aniline |
DE2837960A1 (en) * | 1978-08-31 | 1980-03-13 | Bayer Ag | AZO DYES |
-
1982
- 1982-05-28 DE DE19823220117 patent/DE3220117A1/en not_active Withdrawn
-
1983
- 1983-05-16 EP EP83104789A patent/EP0095638B1/en not_active Expired
- 1983-05-16 DE DE8383104789T patent/DE3360666D1/en not_active Expired
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---|---|---|---|---|
DE1543620A1 (en) * | 1966-10-15 | 1969-07-31 | Bayer Ag | Process for the preparation of 2,6-dicyano-4-nitroaniline |
DE2617807A1 (en) * | 1976-04-23 | 1977-11-03 | Basf Ag | (3)-Amino (5)-nitro benzoisothiazole diazo components - for azo dyes for polyesters, cellulose acetates, etc. |
Non-Patent Citations (2)
Title |
---|
Chemical Abstracts Band 83, Nr. 13, 29. September 1975, Columbus, Ohio, USA B. RIGERTE et al. "Properties of 2,6-dicyano-3,5-dimethylaniline", Seite 508, Spalte 2, Abstract Nr. 113891y & Latv. PSR Zinat. Akad. Vestis, Kim. Ser., Nr. 3, * |
Chemical Abstracts Band 95, Nr. 9, 31. August 1981, Columbus, Ohio, USA K. GEWALD et al. "Syntheses of 3-amino-2,4-dicyanothiophenols using derivatives of 2-amino-3-cyanothiopyran-6-ylidenecyanoacetic acid", Seite 753, Spalte 1, Abstract Nr. 80621c * |
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